WTD: S100 Static RAM card

[Mike Stein]

Maybe you could adapt one of John & Andrew's 
boards?

http://s100computers.com/My%20System%20Pages/PROM%20Board/PROM%20Board.htm

m
----- Original Message ----- 
From: "Philip Lord" <philip at neoncluster.com>
To: "General Discussion: On-Topic and Off-Topic 
Posts" <cctalk at classiccmp.org>
Sent: Thursday, March 26, 2015 6:30 PM
Subject: Re: WTD: S100 Static RAM card


Hi Mike,
Well it’s certainly nice to know the Cromemco is 
also another good option if I want to try DRAM 
again, but I am feeling that a good SRAM card 
maybe a safer option, and possibly easier for me 
to repair if anything goes wrong.

Thanks for your thoughts

> On Mar 27, 2015, at 10:32 AM, Mike Stein 
> <mhs.stein at gmail.com> wrote:
>
> FWIW I've never had any problems with Cromemco 
> 64KZ-II DRAM cards.
>
> m
>
> ----- Original Message ----- From: "Philip Lord" 
> <philip at neoncluster.com>
> To: <publicmail at jwsss.com>; "General Discussion: 
> On-Topic and Off-Topic Posts" 
> <cctalk at classiccmp.org>
> Sent: Thursday, March 26, 2015 5:19 PM
> Subject: Re: WTD: S100 Static RAM card
>
>
> Hi Jim, thanks for the info.
> Always good to know what people think are good 
> cards, and what aren’t.
>
> Cheers
>
>
>> On Mar 27, 2015, at 10:13 AM, Jim Stephens 
>> <jws at jwsss.com> wrote:
>>
>>
>>
>> On 3/26/2015 1:34 PM, Philip Lord wrote:
>>> Hi all,
>>> I’ve been struggling getting a 64k Dynamic RAM 
>>> card back up and working in my IMSAI 8080. In 
>>> fact I’m giving up on the DRAM card in this 
>>> system and have decided to start looking for a 
>>> SRAM card that can get the IMSAI up to 56k.
>>>
>>> In terms if SRAM cards, I presently have:
>>>
>>> 2 x Problem solver RAM16 cards - both seem to 
>>> be working.
>>> 2 x 8K RAM cards - both seem to be working.
>>>
>>> Less cards generating heat, and putting stress 
>>> on the old power supply is obviously best, so 
>>> I’d be looking for either:
>>>
>>> - 1 x 16k SRAM card (for a total of 4 RAM 
>>> cards (3 x 16k + 1 x 8k) in my system). A PSS 
>>> RAM16 would be preferred for sake of 
>>> consistency, but obviously not crucial.
>>> - 1 x 32k SRAM card (for a total of 3 RAM 
>>> cards (1 x 32k, 1 x 16k + 1 x 8k) in my 
>>> system)
>>> - 1 x 64k SRAM card that can have the last 8k 
>>> bank turned off
>>>
>>> I would love to hear from anyone with one of 
>>> the above cards who would be willing to pass 
>>> it on.
>>>
>>> Much thanks for your time.
>>>
>>> Best regards
>>>
>>> Philip
>> I do not have any to pass on, but in the day, 
>> you couldn't do better than IMS 16k's  I also 
>> had a Tarbell CPU with 256k of Dram, and that 
>> was the only dynamic ram I ever had in an S100 
>> system.
>>
>> Also if you can find Compupro, I suspect it is 
>> as likely to be perfect as the IMS boards are.
>>
>> Thanks
>> Jim
>